Turbine.



J. HORMBY.

TURBINE. APPLICATION FILED 111M119, 1908. RENEWED APR. 7, 1909.

Patented July 13, 1909.

ZBHEBTB-SHBET 1.

Inventor: by I est:

J. HORMBY.

TURBINE. uruouxon FILED mm: 19, 190B. nmmwnn APR. 7, 1909.

927,536. Patented July 13, 1909. 2 SHEETS-SHEET 2.

j and UNITED STATE PATENT @FFIQE.

JOHN EOR MBY, O1 SPRINGFlELl), MASSACHUSETTS.

TURBINE Application filed June 19, 1908, Serial No. 439,287.

Specification otLetters Patent.

To all'wfiom it may concern:

Be it known that. 1,. JOHN IIORMBY, a citizen of, the United States, and a resident of Springfield, in the county of Ilampden and State of Massachusetts, 'ave invented certain new and useful Improvements in TurbineM.otors, of which the following is a specification. I

My invention relates tomotors of the tnr-.

i ne type and its novelty consists in the col1- struction and adaptation of the parts as will be more fully hereinafter pointed out.

a co-pending application for Letters Patent of the United States, Serial No. 439,285 filed by me on the 19th day of June, 1908, I have described a peculiar form of jet propelled vane or bucket which I call for the sake of identification a demi-vane and which, in brief, ismade integral with. the disk on which it is mounted and comprises a crescent-shaped body with cylindrical surfaccs oblique to its supporting disk and to the shaft on which it is rotated. The subject matter of this invention is a result of the further dcvelopmcnt or carrying forward of the inventive ideas described in that ap )lication. Necessarily in the description whicli follows I must repeat something of the descriptive matter of that application.

Figure 1 is a longitudinal vertical section partial front elevation of a device embodying my invention and Fig. 2 is a transverse vertical section through the casing on the plane of the line 22 in Fig. 1 and a side elevation looking from right to loft in that figure.

In the drawings, 20 is a casing adapted to contain a double turbine comprising disks 11, 12 and 13, all secured to a shaft IO-adapted to rotate in suitable bearings in the side of the casing. Each disk 11 and 13 is imporforate on its outer surface and each has an inwardly projecting peripheral rim provided With the dcmi-vanes above referred to. .The intermediate disk 12 has a central web and two out 'ardly projecting peripheral rims each provided with demi-vanes as described in the )atent application above referred to but with this important difference. The adjacent vanes on the disks 1.1 and 12 and the adjacent vanes on the disk 12 and 13 all are adapted to receive steam from the samc direction and to rotate in the same direction. In other words, the three disks togcthcr constitute a composite double turbine with two series of propelling vanes, which, for the sake of brevity, I will call a and b. The demivanes on the opposing faces of the adjacent disks preferably are staggered to prevent any tendency to side thrust. This arrangement is not necessary but is quite convenient.

The casing 20 is provided with. twonozzlcs, one 21 leading to the vane series a, and the other 22 leading to the vane series I)- These lead from a chamber 230 in a steam chest 23 supplied with steam from a suitable conduit indicated at 24. The steam chest is divided into a plurality of compartments 230 just mentioned, 231, and 232, so )aratcd from cach other by strong steam tig it partitions 233.

There are additional casings 200 and 201-, 'each containing a composite turbine made up of vancd disks 11, 12 and 13 and each constructed and operated in the same manner.

A cross over port 234 leads from the casing 20 to the compartment 231 and a similar cross over port 235 of larger cross sectional arca leads from the casing 200 to the com- 'iartment 232.

. Steam nozzles 236 and 237,.cach of larger cross sectional area than the nozzles 21 and 22, lead from the com )artmcnt 231 to the vane series (1. and I) of t 1c composite turbine in the casing 200 and similar steam nozzles 238 and 239, larger in cross sectional area than the nozzles 236 and 237, lead from the compartment 232 to the vane series a and b of the composite turbine in the casing 201. The shaft from the last mentioned composite motor is connected by proper power transmitting mechanism indicated at 40 to any place where the developed energy may suitably be employed. A iinal discharge conduit 240 leads from the casing 201.

In operating the dcvicc, steam from the compartmcnt 230 is admitted to the nozzles 21 and 22 and impinging upon the 'vanc scrics u and Z) of the composite motor in the casing 20 energizes the motor and passes out through the spaces between the vancs or through appropriate apertures in the disks 1 1, 12 and 1;) provided for the purpose into the spaccwithintln-casing2t). Thcuccthcstcam passcs through (.hc cross over ort 234 to the l com nntmcnt 231 and into the nozzles 236 l and 237 leading to the next compositc motor. j it will be .notcd that while the cross sectional area of each nozzle 231i and 237 is greater than that. of the nozzles 21 and 22 yet the vanes on the motor supplied thcrclrom are l no largcr and no more Minn-rolls. Alder being discharged from this motor into the casing 200 the steam asses through the cross over port 235 into it e compartment 232 and thence into the nozzles 238 and 239which are larger in cross sectional area than the nozzles 236 and 237, while the size of the vaneson the motor supplied therefrom is no larger and the vanes are no more numerous than before. The steam discharged from the last mentioned motor into the casing 201 passes out through the port 240.

By this construction I am enabled to use motor turbines having vanes of the same size and number while 1 compound the steam and ex and it from one steam. chest to the other en arging the cross sectional area of the successive cross over ports and energizing nozzles oniy. This means uniformity of design and simplicity in construction of the different turbines and economy in manufacture and ractice.

W at 1 claim as new is: r

i. In a com ound steam turbine, the combination of a p urality of sets of turbines, each set comprising turbine disks having demivanes projecting inwardly at an angle therefrom in opposing relation, a steam inlet for the propelling jet of one of said sets, and int-ans to supply steam in a relatively ncreasing volume to each succeeding set, from the e 'haust oi the preceding set.

2. in a compound steam turbine, thecom- .tunation of a plurality ol" sets of turbines 1 l l l l mounted upon a common. shaft, each set com- )risins three turbine disks, the two outer disks having a series of inwardly projecting vanes, and the inner disk having two series of out 'ardly projecting vanes, forming double turhines, a steam inlet for the propelling jet of one of said turbine sets, and means to supply steam in a relatively increasing volume to each succeeding set, from the exhaust of the preceding set. in a compound steam turbine, the combination of a plurality of separated sets of turbines mounted upon a common shaft, each set comprising three turbine disks, the two outer disks having a series of inwardly prejecting vanes, and the inner disk having two series of outwardly projecting vanes, extending; at an angle to their respective disks and toward one another in pairs, a steam inlet for one of said. turbine sets, means connecting the said sets to supply steam in a relatively increasing volume to each succeeding set, from the exhaust of the preceding; set, and

nozzles for the vane series of each of said] sets, of varying area to correspond to the volume (it the steam supply thereof.

l iitness my hand this 17th day of June 1908, at the city of N ew York, in the county State oi New York.

and 

